Lasting-tack



T. OBOLGER.

LASTING TACK.

(No Model.)

, Patented June 10. 1890.

UNITED STATES PATENT OFFICE.

THOMAS OBOLGER, OF ROCHESTER, NEW YORK, ASSIGNOR TO WVILLIAM S. KING, OFMINNEAPOLIS, MINNESOTA.

LASTl NG-TAC K.

SPECIFICATION forming part of Letters Patent No. 430,034, dated June 10,1890.

Application filed April 21, 1888. Serial No. 271,484. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS OBoLcER, of Rochester, in the county ofMonroe and State of New York, have invented certain new and usefulImprovements in Lasting Tacks or Implements, of which the following is aspecification.

This inventionconsists in a metallic strip or plate provided with aseries of teeth or points, and designed to be driven through the upperand into the outsole of turn work after the'upper has been stretchedupon the sole on the last, and while the sewing is being performed to bewithdrawn just in advance of the stitching.

The implement or device is to be distinguished from the now commontack-strips, which consist merely of a series of connected tacksdesigned to be driven and left in the shoe as a permanent fastening,such strips having only a thin fiat connecting portion, insufficient tomaintain the original form of the strip against the blows of an ordinaryhammer, and not being designed or adapted to be withdrawn from the shoe,whereas this device has a connecting portion of considerable verticalmovement formed with ears or lugs beneath which an extracting-tool maybe made to engage.

In the annexed drawings, Figure 1 is a perspective view of a turned shoeas it appears upon a last, showing the manner of applying and using theimproved implement, which for want of better designation is termed alasting-tack, Fig. 2, a perspective view of the device itself.

As intimated, this device is more especially designed for use inconnection with turnworkthat is to say, work which is lasted with thelining turned outward, and its purpose is'to hold the edges of the upperin the position to which they are brought by the folding blades orwipers of a lasting-machine. It consists of a plate A, of steel or otherstiff and tough metal, provided along its lower edge or sides with aseries of points or prongs a, and at one or both ends with a lug Z). Thebody of the strip above the prongs is made of such width vertically asto give due stiffness or rigidity and to prevent its being bent under byblows of a hammer, by which it will be driven through the leather of theupper and into the sole. It is or may be curved to conform more or lessclosely to the outline of the sole, and is thereby further stiifenedvertically. The teeth or prongs are sharppointed, to pierce the leatherreadily, and are of tapering form to give due strength and stiffness.The lug or lugs may be formed by merely undercutting the strip at theend, and a hole or holes 0 may be formed at any point in the length ofthe strip to receive the point of an awl or extracting implement, eitheror both provisions being made, as preferred.

In using the implement, the shoe having been duly lasted, the foldingblades or wipers are retracted, leaving the edges of the upper lyingflat upon the sole. The lasting-tacks or toothed plates are at oncedriven at intervals, as indicated in Fig. 1, preventing the edges of theupper from withdrawing from the position given them by the blades orwipers. The sewing is begun just in advance of the heel at one side, andas it approaches a fastening plate or tack such plate or tack isWithdrawn, and the sewing proceeds to the next, which is then withdrawn,and so on until the sewing is completed.

Having thus described my invention and disclaiming the common tack-stripdesigned as a permanent connecting or fastening device for uniting shoesoles and uppers, what I claim is l. A lasting-tack consisting of arigid metallic plate provided on its lower edge with a series of prongs,the plate and prongs of permanent form,in contradistinction totackstrips in which both the body and prongs are flexible and designedto be permanently bent in use.

2. A lasting-tack consisting of a rigid metallic strip provided withprongs on one edge and with a recess to receive an extractingtool,substantially as shown and described.

I11 witness whereof I hereunto set my hand in the presence of twowitnesses.

THOMAS OBOLGER.

\Vitnesses:

HENRY M. GooDHUE, W. L. DOBBIN.

